Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfb6c9e3d5a24a9…

MALICIOUS

PDF

49.9 KB Created: 2020-08-05 07:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2769b8fae247a95c69ea35527002bae SHA-1: ea84bbd7d2786e5a00bb99a489be873270bf6a70 SHA-256: 2dfb6c9e3d5a24a920099807cabbbc0e62ca146cf2fff85990e63f1e9a7e0ce5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, including one identified as a malicious redirector pointing to 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to educational worksheets. The presence of numerous links, many pointing to Shopify-hosted PDFs, indicates a link farm strategy to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=transformation+of+sentences+affirmative+to+negative+worksheets+pdf In PDF document text
    • http://files.musky-lures.com/uploads/1/3/2/7/132712306/vetikina-sumefaxozaz-ranano.pdfIn PDF document text
    • http://files.xoskshop.com/uploads/1/3/1/3/131381539/miseve.pdfIn PDF document text
    • http://files.nysabaparent.org/uploads/1/3/1/3/131398129/92c55c.pdfIn PDF document text
    • http://kujibova.markuswilsing.com/uploads/1/3/1/4/131408738/pefemufad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/writing_ielts_band_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5528/4373/files/69787218337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/zerujagezukomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/80990347015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/zijixivatamobisiwag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/xoxukarukuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/dovegibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6114/8837/files/8319613722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/wuzosadod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4292/8790/files/repux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/78835810045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/eu_to_rf_conversion.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000842d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842D 5700 bytes
SHA-256: b1c0ba5b1b65eca19ca522970e25e24963f6189224e0e1426a9fa31b03b4546f
font_01_sfnt_off0000977e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977E 10256 bytes
SHA-256: 6b860b8b5d5d807413cf53de90346df76bb44bd121a58c2c833b806daab2af80

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